1. Clay: It should contain a certain amount of loose particles to facilitate the mixing of cement. A clay with a small amount of sand can be sanded in the soil. Clay with less sand and harder material, must be ground and then sanded.
2, cement: blended with 10% of 425 # ordinary Portland cement, can improve the strength and water resistance of the brick, no cracking after immersion. Otherwise, the bricks will crack.
3. Admixture: Incorporating a small amount of admixture (reinforcing agent), in addition to improving the induration strength of the brick, it can also reduce the amount of cement and reduce the cost of the product.
4. Water: The water consumption is appropriate and the strength of the brick is high. The molding water is less, the strength of the brick is poor, the material has large resistance in the mold, the pressure on one side is pressed, and the bottom surface of the brick is not dense; the molding water is much, the bottom surface is wet, and it is easy to be damaged when the mold is discharged. When the moisture content of the sand is 3 to 5%, the water consumption during molding is preferably 10%. If the raw material fine sand is too much, it will drop to 8%.
Product Description
PTFE Rod
•Material: 100% virgin PTFE, no recycle.
•Certificate: ISO9001,MSDS,RoHs,REACH,FDA,Certificate of Origin.
•Own best performance,can be filled other material such as Bronze,Fiber glass,Carbon,Graphite and so on.
•Length could be made on the basis of customer's requirement.
•Payment item: T/T,L/C,DP or others.
•Price item: FOB,CIF,CFR and so on.
•Delivery time: As your request,usually within 7 days.
8. Free samples can be offered as your requirements.
SPECIFICATION:
Diameter(mm) Dia. Tolerance(mm) Length(mm) Length Tolerance(mm)
4~9 +0.48~0.58 1000/2000 +10.0
10~50 +1.1~1.6 1000/2000
55~200 +2.0~5.0 1000/2000
4ft,or as request
MAIN PROPERTIES:
Item Unit Value
Gravity g/cm3 2.10-2.30
Tensile Strength MPa more than 14
Elongation Break % more than 140
PTFE Rod
PTFE Rod,Teflon Rod Stock,Teflon Rod,White PTFE Rod
ZHENJIANG CHUNHUAN SEALING MATERIALS CO.,LTD(GROUP) , http://www.chsealing.com